Thermostatic control for carburetors



msmm

June 2% 9 1926.

A J. FARKAfi- THERMOSTATIC CONTROL FOR 'CARBURETORS atented J unev 22,1926.

UNITED STATES PATENT orrlce.

JOHN FARKAS. DETROIT, MICHIGAN.

.THERMOSTATIC CONTROL FOB CARBURETORS.

Application filed March 13, 1922. Serial N0. 543,173.

The invention relates to thermostatic mntrol devices for Carburetors and refers particularly to a thermostatic control device subjected to heat radiated froman exhaust manifold ofan engineand adapted to be operatively connected to the needle valve of a carburetor. One of the objects of the invention is to provide a thermostatic needle valve which can be easily inclosed within a housing at the side of the exhaust manifold so that no portion of the thermostatic bar llti tit

will be exposed -to the air passing the lower end of the housing, which will rotate the ca rburetor needle valve a sufiicient distance, Whichdoes not vary in operation and which is strong and yet requires no more material than other forms of thermostatic bars. lVith the above objects in view, the invention resides in the novel features of construction as more fully hereinafter set forth.

In the drawings:

Figure 1 is a perspective view showing a portion of an engine with my thermostatic control device applied;

Figure 2 is a side elevation of the device showing the same applied to the exhaust manifold;

Figure 3 is a-cross section on the line is a bracket secured to the lowerend of the front :WQLH. 6 and extending downwardly a sufficient distance to be clamped between the clip 9 and the rear-bifurcation of: the intake manifold 2, this bracket supporting the housing. 10 is a spiral thermostatic coil eatendingtransversely of the housing near middle and having one end fixedly secured to the front wall 6 of the housing and the other end fikedly secured to the upper] end'o'f the rod 11 extending upwardly with- Y inthe housing at. 12 is a yoke secured to the lower end of the .rod 11 and having its arms engaging in apertures inthe; transvuraeiy extending plate 13 at the end of the needle valve 14 of the carburetor, this needle valve controlling the flow of gasoline.

The yoke 12 adjustably secured to the rod 11 sons to permit various positions of rotative adjustment relative thereto, as by means of the sleeve 15 fixedly secured to the rod and the set screw 16 threaded in the sleeve and abutting the yoke, whereby the rotative position of the needle valve 14 of the carburetor may be varied independently of the spiral thermostatic element.

With the spiral construction of thermostatic bar, the thermostatic coil can beeasily inclosed within its housing at a distance sutliciently above its open lower end so that it will not be exposed to air passing the lower open end'of the housing. Also the thermostatic coil is of strong construction, can be easily manufactured, and requires no more material than other and weaker forms of thermostatic coils, and at the same time. it

avill have. sutficient movement to rotate the needle valve 14- of the carburetor the necessary angular distance. lFurthermore, with. this construction of thermostatic bar and the manner of housing the same, the operation of the device varies but slightly.

What I claim as my invention is:

1. In an internal combustion engine,- the combination with a carburetor having a rotatably adjustable needle' valve and an exhaust manifold above said carburetor, oi a housing adjacent to said manifold and arranged at one side thereof, said housing being closed at the front top and sides and i being open at the rear, a spiral ther'mostatic element within said housing exposed to direct radiation from said exhaust manifold and having one end secured to said housing, a rod rotatable about its" axis and extending-substantially vertical at the side of said exhaust manifold, said rod having oneend thereof engaging and directly secured'to the opposite end of said thermostatic element and a yoke'adjustably secured to the opposite end of said rod so as to permit various positions of rotative adjustment relative thereto and connected to said valve for adjusting the same upon movement of said thermostatic element.

2. In an internal combustion engine, the combination with a carburetor having a rotatably adjustableneedle valve and an exhaust manifold abovesaid carburetor, of a housing ad acent to and manifold and v ranged at one side thereof a spiral thermostatic element Within saioi housing hevihg one end secured thereto, a rooi rotatable about its axis and extending substantially vertically m; the side o'fi said. exhaust T112313 fold, said rod heving'one enclihereof secured who the opposite end of said thermostatic element and e yoke edjuetzibiy segeowoeo cured to the opposite end of said rod so to permit various positions of rotzitive adjustment relative thereto and connected. to said Valve for I adjusting the 5&1116'1113011 movement of said thermosije'bic element.

in testimony whereof I zifiix my sigqotui'e.

JUHN meme. 

